First differences of A084449.

Terms

a(0) =4a(1) =5a(2) =26a(3) =7a(4) =59a(5) =42a(6) =222a(7) =328a(8) =36a(9) =197a(10) =765a(11) =30a(12) =543a(13) =594a(14) =813a(15) =1248a(16) =2932a(17) =618a(18) =519a(19) =2413a(20) =686a(21) =3159a(22) =6019a(23) =145a(24) =7132a(25) =1997a(26) =4587a(27) =5865a(28) =8598a(29) =2367